What is wrong with the funds pending in my task funds section?

Hi my friends, Do you know how to delete the task that I have posted there?
What is wrong with the funds pending in my task funds section?
As far as I am concerned, I have posted some tasks in mylot,just wish to get more referrals online with the tasks.But for the moment, the tasks there are expired.So I just want to ask you whether you can help me to deal with the situation?What is more, There some money just pending in my task funds there? What is wrong with my pending money there?
Thank you so much for your help.